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| Gali, Marti; Levasseur, Maurice; Devred, Emmanuel; Simo, Rafel; Babin, Marcel. |
| The marine biogenic gas dimethylsulfide (DMS) modulates climate by enhancing aerosol light scattering and seeding cloud formation. However, the lack of time-and space-resolved estimates of DMS concentration and emission hampers the assessment of its climatic effects. Here we present DMSSAT, a new remote sensing algorithm that relies on macroecological relationships between DMS, its phytoplanktonic precursor dimethylsulfoniopropionate (DMSPt) and plankton light exposure. In the first step, planktonic DMSPt is estimated from satellite-retrieved chlorophyll a and the light penetration regime as described in a previous study (Gali et al., 2015). In the second step, DMS is estimated as a function of DMSPt and photosynthetically available radiation (PAR) at the... |
| Tipo: Text |
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| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00673/78487/80830.pdf |
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| Landwehr, Sebastian; Volpi, Michele; Haumann, F. Alexander; Robinson, Charlotte M; Thurnherr, Iris; Ferracci, Valerio; Baccarini, Andrea; Thomas, Jenny; Gorodetskaya, Irina; Tatzelt, Christian; Henning, Silvia; Modini, Rob L; Forrer, Heather J; Lin, Yajuan; Cassar, Nicolas; Simo, Rafel; Hassler, Christel; Moallemi, Alireza; Fawcett, Sarah E; Harris, Neil; Airs, Ruth; Derkani, Marzieh H; Alberello, Alberto; Toffoli, Alessandro; Chen, Gang; Rodríguez-ros, Pablo; Zamanillo, Marina; Cortés-greus, Pau; Xue, Lei; Bolas, Conor G; Leonard, Katherine C; Perez-cruz, Fernando; Walton, David; Schmale, Julia. |
| The Southern Ocean is a critical component of Earth’s climate system, but its remoteness makes it challenging to develop a holistic understanding of its processes from the small to the large scale. As a result, our knowledge of this vast region remains largely incomplete. The Antarctic Circumnavigation Expedition (ACE, austral summer 2016/2017) surveyed a large number of variables describing the dynamic state of the ocean and the atmosphere, the freshwater cycle, atmospheric chemistry, ocean biogeochemistry and microbiology. This circumpolar cruise included visits to twelve remote islands, the marginal ice zone, and the Antarctic coast. Here, we use 111 of the observed variables to study the latitudinal gradients, seasonality, shorter term variations, the... |
| Tipo: Text |
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| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00691/80275/83359.pdf |
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